Answer to Question #252807 in General Chemistry for Sege

Question

A is a solution of trioxonitrate (v) acid of no concentration. B is a standard solution of sodium hydroxide containing 4 gram per dm³ of solution. 25cm³ of portion of solution B require an average of 24cm³ of solution A for complete neutralization. State with a reason, a suitable indicator for the titration.

Answer 1

1) HNO3

2) NaOH

3) HNO3+NaOH=NaNO3+H2O

Signum - phenolphthalein